[PATCH AUTOSEL 4.19 624/671] ipmi: Fix memory leak in __ipmi_bmc_register

[Sasha Levin]

From: Navid Emamdoost <navid.emamdoost@xxxxxxxxx>

[ Upstream commit 4aa7afb0ee20a97fbf0c5bab3df028d5fb85fdab ]

In the impelementation of __ipmi_bmc_register() the allocated memory for
bmc should be released in case ida_simple_get() fails.

Fixes: 68e7e50f195f ("ipmi: Don't use BMC product/dev ids in the BMC name")
Signed-off-by: Navid Emamdoost <navid.emamdoost@xxxxxxxxx>
Message-Id: <20191021200649.1511-1-navid.emamdoost@xxxxxxxxx>
Signed-off-by: Corey Minyard <cminyard@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/char/ipmi/ipmi_msghandler.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c
index 91f2d9219489..980eb7c60952 100644
--- a/drivers/char/ipmi/ipmi_msghandler.c
+++ b/drivers/char/ipmi/ipmi_msghandler.c
@@ -2965,8 +2965,11 @@ static int __ipmi_bmc_register(struct ipmi_smi *intf,
 		bmc->pdev.name = "ipmi_bmc";
 
 		rv = ida_simple_get(&ipmi_bmc_ida, 0, 0, GFP_KERNEL);
-		if (rv < 0)
+		if (rv < 0) {
+			kfree(bmc);
 			goto out;
+		}
+
 		bmc->pdev.dev.driver = &ipmidriver.driver;
 		bmc->pdev.id = rv;
 		bmc->pdev.dev.release = release_bmc_device;
-- 
2.20.1